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Finding the Fourth Proportional to 627,835.54, 866,442.67 and 355,908.71

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Solution

The fourth proportional to 627,835.54, 866,442.67 and 355,908.71 is: 491,170.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,835.54 : 866,442.67 = 355,908.71 : x
  2. Step 2: Convert to fraction form
    627,835.54/866,442.67 = 355,908.71/x
  3. Step 3: Cross multiply
    627,835.54x = 866,442.67 × 355,908.71
  4. Step 4: Simplify right side
    627,835.54x = 308,374,492,968.66
  5. Step 5: Solve for x
    x = 308,374,492,968.66/627,835.54
  6. Step 6: Final answer
    x = 491,170.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.